1972-D One Cent Brockage Worth Slabbing Or Vise And Hammer Work?

The obverse is the key to this being PMD.

The obverse clearly was fully struck up, evident by the date, design rim and remains of the bust.

A second force, however, had to be applied to flatten the previously struck up details, and if the coin remained in the chamber it would have received the force while up against the same die, resulting in some form of obverse "re-impressioning".

Instead we see that the second force was applied while the obverse was against a flat surface, meaning post mint mechanical alteration is the most likely answer.

I'm just going by the way the obverse details were flattened = pounding on the reverse. Just my observation. I don't have the patience to study coins for very long though.........

I agree with everyone that this appears to be created by pounding another coin over the coin in question. But would someone care to explain the 2 copies of E Pluribus Unum, both of which appear raised and not inverse?

You'd be surprised how it is done with a little ingenuity it'll take a little practice but there are plenty bored people out there, Press a blank thru a vise onto a coin ,it'll pick up the reversed details ,put that back over another cent and pound it and you'll get the impression of the correctly oriented devices on that coin.
On this coin you can see the reversed lettering of AMERICA in front of the word CENT.

lol @HondoB and I posted the same respond about same time.